Hingganite-(Y) Mineral Data

General Hingganite-(Y) Information

Chemical Formula:

Y2([ ])Be2Si2O8(OH)2

Composition:

Molecular Weight = 433.65 gm

Calcium 2.59 % Ca 3.62 % CaO

Lanthanum 0.32 % La 0.38 % La₂O₃

Cerium 1.29 % Ce 1.51 % Ce₂O₃

Praeseodymium 0.32 % Pr 0.38 % Pr₂O₃

Samarium 1.04 % Sm 1.21 % Sm₂O₃

Gadolinium 2.18 % Gd 2.51 % Gd₂O₃

Dysprosium 2.25 % Dy 2.58 % Dy₂O₃

Yttrium 24.81 % Y 31.50 % Y₂O₃

Holmium 1.14 % Ho 1.31 % Ho₂O₃

Erbium 1.54 % Er 1.76 % Er₂O₃

Thulium 0.39 % Tm 0.44 % Tm₂O₃

Lutetium 0.81 % Lu 0.92 % Lu₂O₃

Terbium 0.37 % Tb 0.42 % Tb₂O₃

Ytterbium 2.00 % Yb 2.27 % Yb₂O₃

Beryllium 4.30 % Be 11.94 % BeO

Iron 2.96 % Fe 3.81 % FeO

Silicon 13.41 % Si 28.68 % SiO₂

Hydrogen 0.36 % H 3.22 % H₂O

Neodymium 2.00 % Nd 2.33 % Nd₂O₃

Oxygen 35.94 % O

______ ______

100.00 % 100.79 % = TOTAL OXIDE

Empirical Formula:

Y_1.21Ca_0.28Nd_0.06Gd_0.06Dy_0.06Yb_0.05Er_0.04Ce_0.04Sm_0.03Ho_0.03Lu_0.02Pr_0.01Tm_0.01Tb_0.01La_0.01 Fe²⁺_0.23Be_2.07Si_2.07O_8.19(OH)_1.55

Environment:

In a Be-and REE-bearing granophyre in Manchuria, China.

IMA Status:

Approved IMA 1983

Locality:

Heilonghiang, and greater Khingan (Hinggan) area, Manchuria, China. Link to MinDat.org Location Data.

Name Origin:

Named for it's locality.

Name Pronunciation:

Hingganite-(Y) + Pronunciation

Synonym:

Yberisilite

Yttroceberite

Yttroceberysite-(Y)

Hingganite-(Y) Image

Images:

Hingganite-(Y)

Comments: Group of prismatic hingganite-(Y) crystals.
Location: Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy. Scale: Crystal Size 2 mm.
© Sergey Vasiliev / Systematic Mineralogy

Hingganite-(Y) Crystallography

Axial Ratios:

a:b:c =1.2988:1:0.6232

Cell Dimensions:

a = 9.883, b = 7.6091, c = 4.7423, Z = 2; beta = 90.342° V = 356.62 Den(Calc)= 4.04

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.84(1), 3.11(0.8), 3.12(0.8),2.54(0.5), 2.55(0.5), 2.2(0.3), 1.97(0.3),

Physical Properties of Hingganite-(Y)

Cleavage:

None

Color:

Green, Yellow brown, White, Light blue, Light yellow.

Diaphaneity:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.

Hardness:

5-6 - Between Apatite and Orthoclase

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Hingganite-(Y)

Gladstone-Dale:

CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1874,KC= 0.1892
Ncalc = 1.76

Optical Data:

Biaxial (+), a=1.744-1.748, b=1.752-1.765, g=1.75-1.783, bire=0.0060-0.0350, 2V(Meas)=80. Dispersion r

Calculated Properties of Hingganite-(Y)

Electron Density:

Bulk Density (Electron Density)=3.79 gm/cc
note: Specific Gravity of Hingganite-(Y) =4.04 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_{Hingganite-(Y)}= 148.12 barns/electron
U=PE_{Hingganite-(Y)} x r_electron= 560.87 barns/cc.

Radioactivity:

GRapi = 15,712.53 (Gamma Ray American Petroleum Institute Units)
Concentration of Hingganite-(Y) per GRapi unit = 63.64 (PPM)

Hingganite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Hingganite-(Y)** - weak
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.79 cm	352,038	9.51E-06	15,712.53	5.17
100 gm / 3.62 cm	35,204	9.51E-07	1,571.25	0.52
10 gm / 1.68 cm	3,520	9.51E-08	157.13	0.05
1 gm / 7.79 mm	352	9.51E-09	15.71	0.01
0.1 gm / 3.62 mm	35	9.51E-10	1.57	0.00
0.01 gm / 1.68 mm	4	9.51E-11	0.16	0.00
0.001 gm / 0.78 mm	0	9.51E-12	0.02	0.00

Weight of pure Hingganite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.04 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.78 % Th) From Sum REE Elements (15.64 % REE)

Hingganite-(Y) Classification

Dana Class:

54.02.01a.03 (54)Nesosilicate Borosilicates and Some Beryllosilicates

(54.02)with B in [4] coordination

(54.02.01a)Datolite group (Datolite series)

54.02.01a.01 Datolite CaBSiO4(OH) P 2₁/c 2/m

54.02.01a.02 Hingganite-(Ce) (Ce,Ca)2([],Fe)Be2Si2O8[(OH),O]2 P 2₁/a 2/m

54.02.01a.03 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 2₁/a 2/m

54.02.01a.04 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 2₁/a 2/m

54.02.01a.05 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 2₁/a 2/m

Strunz Class:

09.AJ.20 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AJ -Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra,

09.AJ.20 Bakerite Ca4B4(BO4)(SiO4)3(OH)3•(H2O) P 2₁/c 2/m

09.AJ.20 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 2₁/a 2/m

09.AJ.20 Calciogadolinite? CaREE(Fe)Be2Si2O10 P 2₁/a 2/m

09.AJ.20 Datolite CaBSiO4(OH) P 2₁/c 2/m

09.AJ.20 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 2₁/a 2/m

09.AJ.20 Homilite Ca2(Fe,Mg)B2Si2O10 P 2₁/a 2/m

09.AJ.20 Gadolinite-(Ce) (Ce,La,Nd,Y)2FeBe2Si2O10 P 2₁/c 2/m

09.AJ.20 Gadolinite-(Y) Y2FeBe2Si2O10 P 2₁/a 2/m

09.AJ.20 Hingganite-(Ce) (Ce,Ca)2([],Fe)Be2Si2O8[(OH),O]2 P 2₁/a 2/m

09.AJ.20 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 2₁/a 2/m

09.AJ.20 Melanocerite-(Ce) (Ce,Th,Ca)5(Si,B)3O12(OH,F)•n(H2O)(?) Unk (HEX-R) Trig

09.AJ.20 Minasgeraisite-(Y) CaY2Be2Si2O10 P 2₁/a 2/m

Other Hingganite-(Y) Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin v93:1688) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Hingganite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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Hingganite-(Y)

Y2([ ])Be2Si2O8(OH)2
Dana No: 54.02.01a.03 Strunz No: 09.AJ.20
Locality:

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